the world isn't black and white. You are under the false assumption that rights are absolute, that morality is objective. None of that is true. Morality is subjective, and changes quite frequently. Rights are not absolute or inherent. They are agreed upon by the society you are apart of.
Someone was indoctrinated in cultural-marxism revisionist history. The first colonial American to legally own slaves was a black man. Many Native American Indian tribes practiced slavery and engaged in the slave trade into the 1890's. Since American Indian tribes are considered to be sovereign nations the 13th Amendment had no legal affect on these tribes unless it was written into the treatises that they would end participating in the slave trade and owning slaves. http://files.usgwarchives.net/ok/nations/census/pg380b.txt
Probably not but am I saying that because of some fundamental principles or because it's been culturally ingrained? I'm honestly not sure, that's why I asked my questions.